Reading an absolute encoder via PWM in C++

[Ken Streeter]

Originally Posted by synthmusic

We are trying to get a reading from a sensor, the MAE3 from US Digital. Basically it outputs a PWM signial that shows its position by varying the width from 1 to 4096 uS. We're having trouble finding the right code that will grab that pulse width from the FPGA in a stable manner.

I know this probably isn't the answer you're looking for, but just in case you're unable to find a way to easily measure the PWM signals from the cRIO, you could instead use the MAE3 with the analog option instead.

We used the analog version of the MAE3 on robots in 2007-2009 with very good success, including a prototype swerve drive we built in the off-season.